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首页> 外文会议>IEEE International Conference on the Properties and Applications of Dielectric Materials >Study on electric field distribution of cage-type rigid jumper for 500 kV AC transmission lines
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Study on electric field distribution of cage-type rigid jumper for 500 kV AC transmission lines

机译：500 kV交流传输线笼式刚性跳线电场分布研究

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摘要

Cage-type rigid jumper is an essential connecting component on extra-high voltage (EHV) transmission lines, but with a more serious distortion of surface electric field than straight bundled conductor due to its complex structure and bending. In order to optimize the structure for a jumper with less corona loss, distribution of electric field on the surface of such a jumper is modeled and studied. In this paper, three-dimensional finite element method is applied to simulate the electric field distribution on the surface of quad bundle cage-type rigid jumper on 500kV AC transmission lines; the external diameter of and space between sub-jumpers are varied to observe the changes in electric field as a function of jumper structural dimensions. Three conclusions are obtained: the maximum intensity of electric field increases with the whole curvature of the jumper; the maximum intensity of electric field decreased with the external diameter of sub-jumpers; the intensity as a function of sub-jumper spacing appears to be a U profile. These conclusions could provide reference to the design of extra-high voltage and ultra-high voltage transmission lines.
机译：笼式刚性跳线是超高电压（EHV）传输线上的必要连接组件，但由于其复杂的结构和弯曲，表面电场的表面电场比直线捆绑导体更严重。为了优化具有较少电晕损耗的跳线的结构，建模和研究这种跳线表面上的电场的分布。在本文中，应用了三维有限元方法来模拟500kV交流传输线上Quad Bundle型刚性跳线表面上的电场分布;子跳线之间的外径和空间的外径和空间都变化，以观察电场的变化作为跳线结构尺寸的函数。获得了三个结论：电场的最大强度随跳线的整个曲率增加;电场的最大强度随着子跳线的外径减小;作为子跳线间距的函数的强度似乎是U配置文件。这些结论可以参考超高电压和超高压传输线的设计。

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